Property

Min.

Max.

Default

Description

Autozero

-

-

-

Chromeleon supports this command for compatibility reasons. You cannot perform the command from the command interface on the GC. Perform the command via the device keypad if necessary.

CombinedFlow

0.0 ml/min

1000.0 ml/min

-

Combined gas flow (makeup + inlet gas).

(For detectors without EPC option, this property is read-only.)

 Combined
Flow.Nominal

0.0 ml/min

1000.0 ml/min

-

(For detectors with EPC option) Specifies the target combined flow.

 Combined
Flow.Value

0.0 ml/min

1000.0 ml/min

-

(For detectors with EPC option) Indicates the current combined flow (read-only)

Data_Collection_
Rate

0.1, 0.2, 0.5, 1.0, 2.0, 5.0, 10.0, 20.0, 50.0, 100.0 Hz

² (Demo
mode: 1.0 Hz)

The property is available only for instruments with digital data acquisition mode.

FastPeaks

Off

On

² (Demo
mode: Off)

If set to On, the peak width is 0.004 min (8 Hz bandwidth). Otherwise, the peak width is 0.001 min (1.6 Hz bandwidth).

MakeupFlow

0.0 ml/min

100.0 ml/min

² (Demo mode: 10.0 ml/min)

Properties related to the makeup gas flow (see Front/Back Detector tab page in the Server Configuration program).

 MakeupFlow.
Nominal

0.0 ml/min

100.0 ml/min

² (Demo mode: 10.0 ml/min)

Specifies the target makeup gas flow.

 MakeupFlow.
Value

0.0 ml/min

100.0 ml/min

-

Current makeup gas flow (read-only).

MakeupFlowCtrl (Detectors with EPC option)

Off

On)

² (Demo
mode: On)

Turns the makeup gas flowon and off.

MakeupMode

Make
-up

Combined)

² (Demo
mode: Makeup)

Determines which flow is kept constant: Make-up or Combined.

(The property is available only for FID; TCD, ECD, µ-ECD, NPD, and FPD detectors.)

Range

0

13
in increments of 1

² (Demo
mode: 0)

Data acquisition range. The range sets an amplification factor. The signal range and the smallest signal step depend on the range. The smaller the range, the smoother the signal obtained.

Therefore, if a small range is selected, small signals are more precise, however, high peaks may be cut off.

Analog data acquisition: the range has an effect on the signal amplitude (in mV). The maximum signal value is always 10V (or 1V for some cables).

Digital data acquisition: Chromeleon compensates the signal value. The signal amplitude (in pA) is independent of the range.

TempCtrl

Off

On

² (Demo
mode: Off)

Specifies the state of the temperature control. If set to Off, temperature control is disabled. The property is automatically set to On when a temperature value is entered in the Temperature field.

Temperature

-

-

-

Properties related to the temperature of the heated zone.

 Temperature.
Nominal

0

450°C
in increments of 1

² (Demo
mode: 300°C)

Specifies the target temperature for the heated zone.

 Temperature.
Value

0.0°C

450.0°C

-

Actual temperature of the heated zone (read-only).

Type

-

-

-

Installed detector type:

6890:
None, FID (flame ionization), TCD (thermal conductivity), ECD (electron capture), NPD (nitrogen phosphorous), FPD (flame photometric), Other, µ-ECD

6850:
None, FID, TCD

(read-only)